...tried this:

```
$ cat shared_aa.d
import std;

synchronized class shared_AA_class {
 private:
  int...

...new Expr(minus: new Expr("x"))
    ));
    import std.stdio;
    writeln(expr, " = ", expr.eval(["x": 1...

...d
struct tie
{
    import core.lifetime;
    import std.typecons : tuple;
    static opIndex(Ts...)(auto ref...

...callback("Hello, World");
}

void main() @safe
{
    import std.stdio;
    f((string str) { writeln(str); return...

...needed, why not move them out, like std.streams and so?

Basic building blocks have...

```d
import std;
auto foo()(){static assert(0);}
auto bar(){static assert(0);}
void main...

...For example, we forbid to import directly "std.stdio", but the task is handled by...

...mylib is heavily discounted
3. ban "import std.algorthims" so people write their own generic...

...to provide std.file module and so on related to the files/std streams subsystem...

...e.g https://github.com/dlang/phobos/blob/master/std/internal/math/biguintcore.d#L1042.